Package org.camunda.bpm.engine.impl.scripting.engine

Class ScriptingEngines

java.lang.Object

org.camunda.bpm.engine.impl.scripting.engine.ScriptingEngines

All Implemented Interfaces:

DmnScriptEngineResolver

public class ScriptingEngines
extends Object
implements DmnScriptEngineResolver

Manager for JSR-223 ScriptEngine handling.

Resolving a script engine: This class supports resolving a script engine for a given 'language name' (eg. 'groovy'). If the configuration option enableScriptEngineCaching is set to true, the class will attempt to cache 'cachable' script engines. We assume a ScriptEngine is 'cachable' if it declares to be threadsafe (see #isCachable(ScriptEngine))

Custom Bindings: this class supports custom Bindings implementations through the scriptBindingsFactory. See ScriptBindingsFactory.

Author:

Tom Baeyens, Daniel Meyer

Field Summary

Fields

Modifier and Type	Field	Description
static final String	DEFAULT_JS_SCRIPTING_LANGUAGE
static final String	DEFAULT_SCRIPTING_LANGUAGE
static final String	ECMASCRIPT_SCRIPTING_LANGUAGE
protected boolean	enableScriptEngineCaching
static final String	GRAAL_JS_SCRIPT_ENGINE_NAME
static final String	GROOVY_SCRIPTING_LANGUAGE
static final String	JAVASCRIPT_SCRIPTING_LANGUAGE
protected ScriptBindingsFactory	scriptBindingsFactory
protected ScriptEngineResolver	scriptEngineResolver

Constructor Summary

Constructors

Constructor	Description
ScriptingEngines(ScriptBindingsFactory scriptBindingsFactory, ScriptEngineResolver scriptEngineResolver)
ScriptingEngines(ScriptEngineResolver scriptEngineResolver)

Method Summary

Modifier and Type	Method	Description
ScriptingEngines	addScriptEngineFactory(ScriptEngineFactory scriptEngineFactory)
Bindings	createBindings(ScriptEngine scriptEngine, VariableScope variableScope)	override to build a spring aware ScriptingEngines
protected ScriptEngine	getGlobalScriptEngine(String language)
protected ScriptEngine	getPaScriptEngine(String language, ProcessApplicationReference pa)
ScriptBindingsFactory	getScriptBindingsFactory()
ScriptEngine	getScriptEngineForLanguage(String language)	Loads the given script engine by language name.
ScriptEngineManager	getScriptEngineManager()
boolean	isEnableScriptEngineCaching()
void	setEnableScriptEngineCaching(boolean enableScriptEngineCaching)
void	setScriptBindingsFactory(ScriptBindingsFactory scriptBindingsFactory)
void	setScriptEngineResolver(ScriptEngineResolver scriptEngineResolver)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Details

DEFAULT_SCRIPTING_LANGUAGE

public static final String DEFAULT_SCRIPTING_LANGUAGE

See Also:

• Constant Field Values

GROOVY_SCRIPTING_LANGUAGE

public static final String GROOVY_SCRIPTING_LANGUAGE

See Also:

• Constant Field Values

JAVASCRIPT_SCRIPTING_LANGUAGE

public static final String JAVASCRIPT_SCRIPTING_LANGUAGE

See Also:

• Constant Field Values

ECMASCRIPT_SCRIPTING_LANGUAGE

public static final String ECMASCRIPT_SCRIPTING_LANGUAGE

See Also:

• Constant Field Values

GRAAL_JS_SCRIPT_ENGINE_NAME

public static final String GRAAL_JS_SCRIPT_ENGINE_NAME

See Also:

• Constant Field Values

DEFAULT_JS_SCRIPTING_LANGUAGE

public static final String DEFAULT_JS_SCRIPTING_LANGUAGE

See Also:

• Constant Field Values

scriptEngineResolver

protected ScriptEngineResolver scriptEngineResolver

scriptBindingsFactory

protected ScriptBindingsFactory scriptBindingsFactory

enableScriptEngineCaching

protected boolean enableScriptEngineCaching

Constructor Details

ScriptingEngines

public ScriptingEngines(ScriptBindingsFactory scriptBindingsFactory,
 ScriptEngineResolver scriptEngineResolver)

ScriptingEngines

public ScriptingEngines(ScriptEngineResolver scriptEngineResolver)

Method Details

isEnableScriptEngineCaching

public boolean isEnableScriptEngineCaching()

setEnableScriptEngineCaching

public void setEnableScriptEngineCaching(boolean enableScriptEngineCaching)

getScriptEngineManager

public ScriptEngineManager getScriptEngineManager()

addScriptEngineFactory

public ScriptingEngines addScriptEngineFactory(ScriptEngineFactory scriptEngineFactory)

getScriptEngineForLanguage

public ScriptEngine getScriptEngineForLanguage(String language)

Loads the given script engine by language name. Will throw an exception if no script engine can be loaded for the given language name.

Specified by:

getScriptEngineForLanguage in interface DmnScriptEngineResolver

Parameters:

language - the name of the script language to lookup an implementation for

Returns:

the script engine

Throws:

ProcessEngineException - if no such engine can be found.

getPaScriptEngine

protected ScriptEngine getPaScriptEngine(String language,
 ProcessApplicationReference pa)

getGlobalScriptEngine

protected ScriptEngine getGlobalScriptEngine(String language)

createBindings

public Bindings createBindings(ScriptEngine scriptEngine,
 VariableScope variableScope)

override to build a spring aware ScriptingEngines

Parameters:

engineBindin -

scriptEngine -

getScriptBindingsFactory

public ScriptBindingsFactory getScriptBindingsFactory()

setScriptBindingsFactory

public void setScriptBindingsFactory(ScriptBindingsFactory scriptBindingsFactory)

setScriptEngineResolver

public void setScriptEngineResolver(ScriptEngineResolver scriptEngineResolver)